Bookend with bookmark storage

Model should be printed at 0.2mm layer height to allow for the thin section that goes under the books. I have not yet been able to print this model due to a broken printer so it would be very helpful if you could like and comment if the design works well for you or if I need to make any modifications. Note: There is a gap in the large rear rectangular section of the model - this is to save on filament and print time and should be able to be bridged fairly successfully without support.